基于FSEC电动赛车的动力匹配及制动能量回收策略研究OA

Taking an electric racing car in Formula Student Electric China(FSEC)as the research object,this paper clarified its driving form by analyzing the design characteristics of the drive system.The performance indicators of each assembly of the racing car were determined with reference to previous competition experience and rules.Based on the analysis of automotive theory,the parameter matching work for motors,batteries,transmission mechanisms and so on was carried out.Moreover,the AVL CRUISE software was used to establish a simulation model of the racing car.The results show that it meets the initial design requirements in terms of maximum speed,75-meter straight-line acceleration and driving range.In addition,in the endurance race,a method for distributing the braking force of the front and rear axles based on the I-curve and β-curve was designed.According to the magnitude of the braking intensity,the braking energy recovery was designed.Under the endurance working conditions in the event,with the help of MATLAB/Simulink,a model of the braking energy recovery strategy and the Cruise racing car model were constructed,and joint simulation was carried out to verify its stability and safety.The simulation results show that the braking energy recovery strategy designed in this paper meets the relevant requirements and enables braking energy recovery,increasing the driving range by 1.195 km and achieving a braking energy recovery efficiency of 5.7%.